Profile: Xiamen Landee Industries Co., Ltd. is a supplier of pipes, valves, flanges, pipe fittings, fasteners, and gaskets. Our products are API and CE (TUV) certified, and are widely used on oil rigs. Our valves include ball, gate, butterfly, globe, check, plug, air, and safety valves. Blind flange has no bore, and is used to close the ends of piping systems. A blind flange also permits easy access to a line once it has been sealed. The blind flanges are sometimes machined to accept a pipe of the nominal size to which reduction is being made. The reduction can be either threaded or welded.